Flint, 135 grams, 90 mm long. Circa 12,000-6,000 BC. A typical chunky cleaver with flat underside and careful knapping from edges to central ridge to the perimeter of the upper side, in a patinated pale grey flint. Reference: Susann Palmer Mesolithic Cultures of Britain for a range of similar examples. Very fine example. Provenance: from an old English collection.